There are few ways thow you can do that. You can sum them with the virtual column like SUM(TableName[Debit Balance]) and the same with Credit Balance. When you open the detail view, you can see them. With a bigger screen you are able to see them from the table view as well if needed.

One way is to add a virtual column with the expression like CONCATENATE(“Debit: $”,SUM(TableName[Debit Balance])," Credit: $",SUM(TableName[Credit Balance])) and then group the table view with that column.